dc.contributor.advisor | Arnberg, Lars | nb_NO |
dc.contributor.advisor | Ludwig, Thomas Hartmut | nb_NO |
dc.contributor.author | Dæhlen, Elin Schonhovd | nb_NO |
dc.date.accessioned | 2014-12-19T13:27:17Z | |
dc.date.available | 2014-12-19T13:27:17Z | |
dc.date.created | 2013-08-29 | nb_NO |
dc.date.issued | 2013 | nb_NO |
dc.identifier | 644214 | nb_NO |
dc.identifier | ntnudaim:9408 | nb_NO |
dc.identifier.uri | http://hdl.handle.net/11250/249273 | |
dc.description.abstract | The effect of Vanadium on the Fe-rich alpha- and beta-intermetallic particles in a high purity Al-7wt% foundry alloy was investigated. Needle- and script-like Fe-rich intermetallic particles were successfully identified as beta-Al(4.5)FeSi and alpha-Al8Fe2Si by EBSD and Fe/Si-ratios from EDS. V was found to accumulate in the alpha-phase and the content increased with increasing V-content in the alloy.For the low cooling rate (0.3 K/s) and 0.3wt% Fe alloy the average area fraction of alpha relative alpha + beta increased with increasing V-content in the alloy and the average total area of intermetallics decreased. For the high cooling rate (1.1 K/s) and 0.3wt% Fe alloy the average area fraction of alpha relative alpha + beta was very high and decreased with increasing V-content in the alloy and the average total area of intermetallics increased from 0 to 600ppm V and decreased from 600ppm to 0.2wt% V. Addition of TiB2 grain refiner caused more and larger beta-needles in the 0.2wt% V alloy. The changes were explained to be due to the stabilization of the alpha-phase in the Al-Fe-Si phase diagram by V-additions, similar to the effect of Mn-additions. | nb_NO |
dc.language | eng | nb_NO |
dc.publisher | Institutt for materialteknologi | nb_NO |
dc.title | The Effect of Vanadium on AlFeSi - Intermetallic Phases in a Hypoeutectic Al-Si Foundry Alloy | nb_NO |
dc.type | Master thesis | nb_NO |
dc.source.pagenumber | 106 | nb_NO |
dc.contributor.department | Norges teknisk-naturvitenskapelige universitet, Fakultet for naturvitenskap og teknologi, Institutt for materialteknologi | nb_NO |